Gun-sight.



J. KLINGENBBRG- GUN SIGHT. APPLICATION FILED JAN. 9, 1905.

an uenfm Jafiiz X2 2729 6726679, v

PATENTED JAN.16, 1906.

JOHN KLINGENBERG, OF KIPLINe. MICHIGAN.

GUN-SIGHT.

Specification of Letters Patent.

Patented Jan. 16, 1966.

Annlication filed January 9, 1905. Serial No. 240,266.

To a/I whom it may concern;

Be it known that I, JOHN KLINGENBERG, a citizen of the United States, residing at Kipling, in the county of Delta and State of Michigan, have invented certain new and useful Improvements in Gun-Sights, of which the following is a specification.

This invention consists of an improved sight of novel construction for firearms, particularly designed with a view to promoting the accuracy of the aim and at the same time embodying adjustable features very advantageous in practical use.

It is well known that in various types of firearms at present in use the back or breech sight is ordinarily located upon the stock of the gun, or upon the barrel of the piece if the firearm be of the bolt-action class. It is advantageous that the back sight be upon the stock in that the increased distance between the front and back sights is conducive to greater accuracy in the aim. In bolt-action pieces, however, the operation of the breecholt would interfere with a breech-sight properly located upon the stock of the gun, so that this sight is commonly placed upon the barrel forward of the breech, which is not desirable for reasons before premised.

An essential feature of this invention, therefore, consists in the application of the back sight of the firearm to the breech-bolt, whereby all the advantages of increased accuracy are attained and at the same time the sight is conveniently located for manipulation, not affecting the action of the breechbolt whatever.

For a full description of the invention and the merits thereof and also to acquire a knowledge of the details of construction of the means for effecting the result reference is to be had to the following description and accompanying drawings.

While the invention may be adapted to different forms and conditions by changes in the structure and minor details without departing from the spirit or essential features thereof, still some of the preferred embodiments are shown in the accompanying drawings, in which Figure 1 is a partial elevation of a rifle, showing the invention applied to the breech thereof. Fig. 2 is a longitudinal vertical sectional view bringing out more clearly the exact construction of the sight and the means for mounting the same upon the firearm. Fig. 3 is a rear elevation showing the sight in operative position. Fig. 4 is a detail perspective view of the sight alone. Fig. 5 is a view in elevation of a modified embodiment of the invention.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawings by the same reference characters.

The breech mechanism shown in the draw ings is of the type at present employed upon the Mannlicher rifle and does not specifically constitute a part of this invention.

The numeral 1 indicates the stock of the gun, and the numeral ,2 the barrel. The breech mechanism is of the class embodying a rearwardly-slidable breech block or bolt 3,

operated by means of a hand lever or arm 4 in a manner which will be apparent to those versed in handling fire arms. Generally speaking, the breech mechanism is of the type which is nowin use upon the Mauser, the Krag-Jorgensen, and other rifles, so that the invention is particularly applicable to firearms of this class. Ordinarily the firing-pin is secured to the breech-block 3 by means of a cap-piece or knob 5, (shown most clearly in the drawings,) and for this purpose the pin is usually provided with a threaded extension received by a threaded opening in the cap piece 5 aforesaid. The breechblock is of course actuated in the customary manner by operation of the member 4, and the sight which comprises this invention is directly applied to the breech-block 3, being secured to the member 5 above described. To admit of attachment of the sight to the breech-block, an attaching-plate 6 is utilized, said plate being firmly fastened to the outer end portion of the member 5 by means of screws 7 or like device. The attaching-plate 6 is provided centrally thereof with an opening 8, and a screw or similar fastening 9 passes through this opening 8, the head 10 of the screw being held between the members 6 and 5 in order to prevent displacement of the same. The screw 9 is thus swivelly connected with the member 5 by means of the plate 6 and is adapted for use in securing-the sight to the breech-block. In order that the member 9 may be frictionally secured between the parts 5 and 6, a washer 11, of rubber or like substance, is interposed between these parts and is in contact with the head 10 aforesaid.

The sight consists of a plate 12 of somewhat circular formation, and one side of this plate is adapted to fit into a recess 13 in the IIO outer side of the attaching-plate 6, secured to the member 5. The plate 12 is provided with a central threaded opening 14 and is thereby adapted to be screwed upon'the member 9 in order to secure said plate to the breechblock. Extending from the outer side of the plate 12 are spaced projections or lugs 15 preferably integral with the plate 12 and provided with transverse openings therethrough. A sightpin 16 is mounted in the transverse openings of the lugs 15 and consists of a threaded body and an extension 17, provided with a peep 18. A nut 19, mounted between the lugs 15, receives the pin 16 in the threaded opening thereof, and the outer surface of this nut is knarled or roughened to facilitate manipulation thereof in adjusting the sight-pin 16. In order to preserve the peep 18 in longitudinal alinement with the barrel 2 of the gun, the pin 16 is provided longitudinally thereof with a groove 20, and a screw 21, threaded into the uppermost of the lugs 15, has its inner end projected into the groove 20, thereby preventing rotation of the sight-pin 16 as the nut 19 is turned in order to adjust the same vertically to vary the range of the rifle in the well-known manner. The sight-pin 16 is not only adapted for vertical adjustment by manipulation of the nut 19, but the sight, because of the swivel connection 9 with the member 5 of the breech-block, is adapted for a certain amount of rotary movement, so that the peep 18 may be adjusted laterally in order to accommodate for deflections of the bullet by the wind. The plate 12 of the sight is provided with a notch 22, adapted to register with an arcuate scale 23 upon the plate 6, as shown most clearly in Fig. 3 of the drawings, so that the lateral adjustment of the sight-pin by a swivel movement upon the plate 6 may be determined.

It will be noted that the preferred form of the invention, as shown, embodies a slidablymounted sight-pin. However, it is contemplated to use a folding construction of sight in connection with the invention also. In the modification in Fig. 5 the lugs 15 are used to support a pivot 24, upon which is mounted a slotted standard 25. The standard 25 is provided with a pivot-lug 26, received between the lugs 15, and pivotal movement of the sight in order to throw the same into and out of operative position is thereby admitted of. A slider 27 is mounted upon the standard 25 and is provided with peep 28. A set-screw 3 29, also mounted upon the member 25, is operably connected with the slider 27 in order to adjust the same vertically.

The sight as embodied in the invention before described is adapted for free adjustment 6 and is of comparatively similar construction, so that it may be quiclrly manipulated in order to secure an ascertained adjustment thereof. Since the sight is carried by the breechblock 3, it will of course be seen that as the '6 member 4 is manipulated in throwing the breech-block rearwardly after firing the piece the sight is carried in the same direction, being rigidly mounted upon the breech-block vfor movement therewith. The sight is thus 7 always in operative position, and in no way does the same prevent proper working of the breech mechanism.

Having thus described the invention, what is claimed as new is 7 1. In combination with a gun embodying a movable breech-block, a sight therefor comprising an attaching-plate secured to the rear end of the breech-block, a plate swivelly connected with the attaching-plate aforesaid, 8

and a sight member adjustable upon the swiveled plate.

2. A sight comprising an attaching-plate adapted to be secured to a gun, a plate swiveled to the attaching-plate, spaced lugs pro- 8 jected from the last-mentioned plate, an exteriorly-threaded sight-pin mounted in said spaced lugs and provided with a peep at one end, a nut arranged between the lugs and mounted upon the sight-pin for adjustment thereof, the sight-pin being longitudinally grooved, and a screw threaded into one of the lugs aforesaid and having one end thereof projected into the groove of the sight-pin so as to prevent rotation of the same on adjustment thereof.

3. A sight for guns comprising an attach- 5 ing-plate, a plate swiveled to said attachingplate, and a sight member adjustable upon the last-mentioned plate, the swiveled plate It admitting of lateral adjustment of the sight as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN KLINGENBERG. Witnesses:

FREDERICK HUBER, H. B. KLINGENBERG. 

